Problem applying gazebo 7 materials

I Iam trying to use diferente materials in my model but it is not working. It just accept colors like: Gazebo/White, Gazebo/Red, etc. If I try to use Gazebo/SmileyHappy, for example, it doesn't work. I can't finde the gazebo.material script in my gazebo package " media/materials/scripts/gazebo.material".